def test_plot_texture():
""""Test adding a texture to a plot"""
globe = examples.load_globe()
texture = examples.load_globe_texture()
plotter = pyvista.Plotter(off_screen=OFF_SCREEN)
plotter.add_mesh(globe, texture=texture)
plotter.show()
def test_plot_texture():
""""Test adding a texture to a plot"""
globe = examples.load_globe()
texture = examples.load_globe_texture()
plotter = pyvista.Plotter()
plotter.add_mesh(globe, texture=texture)
plotter.show(before_close_callback=verify_cache_image)
def test_skybox():
texture = examples.load_globe_texture()
texture.cube_map = False
assert texture.cube_map is False
texture.cube_map = True
assert texture.cube_map is True
skybox = texture.to_skybox()
assert isinstance(skybox, vtk.vtkOpenGLSkybox)
def test_texture():
texture = pyvista.Texture(examples.mapfile)
assert texture is not None
image = texture.to_image()
assert isinstance(image, pyvista.UniformGrid)
arr = texture.to_array()
assert isinstance(arr, np.ndarray)
assert arr.shape[0] * arr.shape[1] == image.n_points
texture.flip(0)
texture.flip(1)
texture = pyvista.Texture(examples.load_globe_texture())
assert texture is not None
mesh.plot(texture=tex)
###############################################################################
# The helper method above does not always produce the desired texture
# coordinates, so sometimes it must be done manually. Here is a great, user
# contributed example from `this support issue <https://github.com/pyvista/pyvista-support/issues/257>`_
#
# Manually create the texture coordinates for a globe map. First, we create
# the mesh that will be used as the globe. Note the `start_theta` for a slight
# overlappig
sphere = pv.Sphere(radius=1,
theta_resolution=120,
phi_resolution=120,
start_theta=270.001,
end_theta=270)
# Initialize the texture coordinates array
sphere.t_coords = np.zeros((sphere.points.shape[0], 2))
# Populate by manually calculating
for i in range(sphere.points.shape[0]):
sphere.t_coords[i] = [0.5 + np.arctan2(-sphere.points[i, 0],
sphere.points[i, 1])/(2 * np.pi),
0.5 + np.arcsin(sphere.points[i, 2])/np.pi]
# And let's display it with a world map
tex = examples.load_globe_texture()
sphere.plot(texture=tex)
